quasar | 30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543

Analysis

max time kernel
16s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-01-2025 02:10

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General

Target

30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe
Size

288KB
MD5

cc5e91e1a0c3ca5edf2bdba7fa252827
SHA1

004ba0788113ebb3bce8eaf63fa53c70caa91079
SHA256

30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543
SHA512

14ee287465bc50dc16ad042d35a14f9e676f645dabf4c4dfbd8f225845e45ab73fee6c3d7967fe44a21994ddbd5b76d0cbd01ec0a2784f913587313c4a407249
SSDEEP

6144:E7zO0LSclT6FOwEP5Kq+SMv0VGb7bDcllbkln:6lJtTF9zVGkllbk5

Score

10^/10

quasar office discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office

85.192.29.60:5173

Mutex

QAPB6w0UbYXMvQdKRF

Attributes

encryption_key
pxC3g4rfVijQxK1hMGwM
install_name
csrss.exe
log_directory
Logs
reconnect_delay
3000
startup_key
NET framework
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral1/memory/2172-1-0x00000000008E0000-0x000000000092E000-memory.dmp	family_quasar

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	ip-api.com

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2388	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2172	30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2388	2172	30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe	31
PID 2172 wrote to memory of 2388	2172	30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe	31
PID 2172 wrote to memory of 2388	2172	30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe	31
PID 2172 wrote to memory of 2388	2172	30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe	31

C:\Users\Admin\AppData\Local\Temp\30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe
"C:\Users\Admin\AppData\Local\Temp\30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "NET framework" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\30efa81a5d0d9bf04a00b4e30823c2f0c7bd6461383acf0195d857edf2162543.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2172-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/2172-1-0x00000000008E0000-0x000000000092E000-memory.dmp

Filesize
312KB

Download
memory/2172-2-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2172-4-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/2172-5-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads